1 files changed, 3 insertions, 1 deletions

diff --git a/tools/build_perl_modules b/tools/build_perl_modules
index fb471459..4bdb81b1 100755
--- a/tools/build_perl_modules
+++ b/tools/build_perl_modules
@@ -74,7 +74,9 @@ foreach my $tarball (@tarballs) {
         chdir $dir or die "Can't chdir into $dir";
 
         # Need to add this so this module is found for subsequent ones
-        $ENV{PERL5LIB}="$topdir/$dir/blib/lib:$ENV{PERL5LIB}";
+        my @dirs = split(":", $ENV{PERL5LIB} || "");
+        unshift @dirs, "$topdir/$dir/blib/lib";
+        $ENV{PERL5LIB}=join(":", @dirs);
 
         if ($opts->{t}) {
                 system("make test") == 0 or die "Can't run make test failed";